quasar | 061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb

Analysis

max time kernel
150s
max time network
135s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-12-2024 06:37

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General

Target

x.exe
Size

3.1MB
MD5

ce560e01aa6d0a1848eacb577880f112
SHA1

ac6013ab7dec397c0f14368492047e5f54091f2c
SHA256

061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb
SHA512

988a405ec7c257c43e21ac721509478113c48ae5cdbfe25d7f0227a6ff473412ba662343365d4ca899fc621b6710437128505f29cb6939f45248ff255c4565ec
SSDEEP

49152:GvUt62XlaSFNWPjljiFa2RoUYI1EF3mMnAfvAoGd5THHB72eh2NT:GvI62XlaSFNWPjljiFXRoUYI1K3L

Score

10^/10

quasar su-pc spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

su-pc

192.168.100.2:4444

Mutex

47a88def-94f4-406d-86f5-8b0b767128df

Attributes

encryption_key
6B74F0C858B7E90573D4E97997F2A082B9781250
install_name
x.exe
log_directory
Logs
reconnect_delay
3000
startup_key
x
subdirectory
SubDir

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Quasar family
quasar

Quasar payload 3 IoCs

resource	yara_rule
behavioral1/memory/2792-1-0x00000000011C0000-0x00000000014E4000-memory.dmp	family_quasar
behavioral1/files/0x0032000000017474-6.dat	family_quasar
behavioral1/memory/2828-10-0x0000000000E00000-0x0000000001124000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2828	x.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File created	C:\Windows\system32\SubDir\x.exe	x.exe
File opened for modification	C:\Windows\system32\SubDir\x.exe	x.exe
File opened for modification	C:\Windows\system32\SubDir	x.exe
File opened for modification	C:\Windows\system32\SubDir\x.exe	x.exe
File opened for modification	C:\Windows\system32\SubDir	x.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2824	schtasks.exe
2664	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2792	x.exe
Token: SeDebugPrivilege	2828	x.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2828	x.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2792 wrote to memory of 2824	2792	x.exe	30
PID 2792 wrote to memory of 2824	2792	x.exe	30
PID 2792 wrote to memory of 2824	2792	x.exe	30
PID 2792 wrote to memory of 2828	2792	x.exe	32
PID 2792 wrote to memory of 2828	2792	x.exe	32
PID 2792 wrote to memory of 2828	2792	x.exe	32
PID 2828 wrote to memory of 2664	2828	x.exe	33
PID 2828 wrote to memory of 2664	2828	x.exe	33
PID 2828 wrote to memory of 2664	2828	x.exe	33

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\x.exe
"C:\Users\Admin\AppData\Local\Temp\x.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2792
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "x" /sc ONLOGON /tr "C:\Windows\system32\SubDir\x.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2824
- C:\Windows\system32\SubDir\x.exe
  "C:\Windows\system32\SubDir\x.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2828
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "x" /sc ONLOGON /tr "C:\Windows\system32\SubDir\x.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\System32\SubDir\x.exe

Filesize
3.1MB

MD5
ce560e01aa6d0a1848eacb577880f112

SHA1
ac6013ab7dec397c0f14368492047e5f54091f2c

SHA256
061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb

SHA512
988a405ec7c257c43e21ac721509478113c48ae5cdbfe25d7f0227a6ff473412ba662343365d4ca899fc621b6710437128505f29cb6939f45248ff255c4565ec

Download Submit
memory/2792-0-0x000007FEF5D13000-0x000007FEF5D14000-memory.dmp

Filesize
4KB

Download
memory/2792-1-0x00000000011C0000-0x00000000014E4000-memory.dmp

Filesize
3.1MB

Download
memory/2792-2-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

Filesize
9.9MB

Download
memory/2792-8-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

Filesize
9.9MB

Download
memory/2828-9-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

Filesize
9.9MB

Download
memory/2828-10-0x0000000000E00000-0x0000000001124000-memory.dmp

Filesize
3.1MB

Download
memory/2828-11-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

Filesize
9.9MB

Download
memory/2828-12-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads